netdev - Re: [RFC 01/20] ice: Initialize and register multi-function device to provide RDMA

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Message-ID: <20190927051320.GA1767635@kroah.com>
Date:   Fri, 27 Sep 2019 07:13:20 +0200
From:   "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To:     "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>
Cc:     "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "jgg@...lanox.com" <jgg@...lanox.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "dledford@...hat.com" <dledford@...hat.com>,
        "Ertman, David M" <david.m.ertman@...el.com>
Subject: Re: [RFC 01/20] ice: Initialize and register multi-function device
 to provide RDMA

On Thu, Sep 26, 2019 at 11:39:22PM +0000, Nguyen, Anthony L wrote:
> On Thu, 2019-09-26 at 20:05 +0200, Greg KH wrote:
> > On Thu, Sep 26, 2019 at 09:45:00AM -0700, Jeff Kirsher wrote:
> > > From: Tony Nguyen <anthony.l.nguyen@...el.com>
> > > 
> > > The RDMA block does not advertise on the PCI bus or any other bus.
> > 
> > Huh?  How do you "know" where it is then?  Isn't is usually assigned
> > to
> > a PCI device?
> 
> The RDMA block does not have its own PCI function so it must register
> and interact with the ice driver.  

So the "ice driver" is the real thing controlling the pci device?  How
does it "know" about the RDMA block?

thanks,

greg k-h